:root {
    --sniper-black: #0a0a0a;
    --cyan-glow: #00cccc;
    --purple-dark: #990099;
    --neon-pink: #ff69b4;
    --glow-cyan: 0 0 5px var(--cyan-glow), 0 0 15px var(--cyan-glow), 0 0 25px rgba(0, 204, 204, 0.8);
    --glow-purple: 0 0 5px var(--purple-dark), 0 0 15px var(--purple-dark), 0 0 25px rgba(153, 0, 153, 0.8);
    --glow-pink: 0 0 10px var(--neon-pink), 0 0 20px var(--neon-pink), 0 0 30px rgba(255, 105, 180, 0.8);
    --transition-speed: 0.4s;
    --pulse-animation: pulse 1.5s infinite;
}
@keyframes pulse {
    0% { box-shadow: var(--glow-cyan); }
    50% { box-shadow: 0 0 10px var(--cyan-glow), 0 0 20px var(--cyan-glow), 0 0 40px rgba(0, 204, 204, 0.6); }
    100% { box-shadow: var(--glow-cyan); }
}
@keyframes glitch {
    0% { transform: translate(0); }
    20% { transform: translate(-2px, 2px); }
    40% { transform: translate(-2px, -2px); }
    60% { transform: translate(2px, 2px); }
    80% { transform: translate(2px, -2px); }
    100% { transform: translate(0); }
}
@keyframes pop3D {
    0% { transform: translateZ(0); opacity: 0.3; background: transparent; }
    100% { transform: translateZ(20px); opacity: 1; background: rgba(15, 15, 15, 0.9); }
}
* { box-sizing: border-box; margin: 0; padding: 0; }
body {
    font-family: 'Fira Code', monospace;
    background: var(--sniper-black);
    color: #d0d0d0;
    line-height: 1.6;
    padding: 2rem;
    position: relative;
    overflow-x: hidden;
    perspective: 1000px;
}
canvas#bgCanvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    opacity: 0.3;
}
header.banner {
    background: rgba(10, 10, 10, 0.95);
    padding: 2rem;
    text-align: center;
    border-bottom: 4px solid var(--cyan-glow);
    box-shadow: var(--glow-cyan);
    margin-bottom: 1rem;
}
header.banner h1 {
    font-size: clamp(1.8rem, 5vw, 2.5rem);
    color: var(--cyan-glow);
    text-shadow: var(--glow-cyan);
    animation: pulse 2s infinite;
}
header.banner p {
    font-size: clamp(1rem, 3vw, 1.2rem);
    color: #b0b0b0;
}
nav {
    background: rgba(0, 0, 0, 0.9);
    padding: 1rem;
    text-align: center;
    border-bottom: 2px solid var(--purple-dark);
    margin-bottom: 2rem;
}
nav a {
    color: var(--cyan-glow);
    text-decoration: none;
    font-weight: bold;
    padding: 0.5rem 1rem;
    margin: 0 0.5rem;
    transition: all var(--transition-speed);
}
nav a:hover {
    color: var(--purple-dark);
    text-shadow: var(--glow-purple);
    animation: glitch 0.3s;
}
main {
    max-width: 1200px;
    margin: 0 auto;
    padding: clamp(1rem, 5vw, 2rem);
}
section {
    margin-bottom: 2rem;
    padding: 1.5rem;
    opacity: 0.3;
    background: transparent;
    transition: all var(--transition-speed);
}
section.active, section:hover {
    transform: translateZ(20px);
    opacity: 1;
    background: rgba(15, 15, 15, 0.9);
    box-shadow: var(--glow-cyan);
    animation: pop3D 0.5s forwards;
}
h2 {
    color: var(--cyan-glow);
    text-shadow: var(--glow-cyan);
    padding-bottom: 0.5rem;
    font-size: clamp(1.5rem, 4vw, 1.8rem);
}
h3 {
    color: #b0b0b0;
    margin-top: 1rem;
    font-size: clamp(1.2rem, 3vw, 1.4rem);
}
p, ul, li {
    font-size: clamp(0.95rem, 2.5vw, 1.1rem);
    color: #d0d0d0;
}
pre {
    background: #151515;
    padding: 1.5rem;
    border: 2px solid var(--purple-dark);
    border-radius: 8px;
    overflow-x: auto;
    font-size: clamp(0.85rem, 2vw, 0.95rem);
    transition: transform var(--transition-speed);
}
pre:hover {
    transform: scale(1.02);
}
.warning {
    background: rgba(0, 204, 204, 0.15);
    padding: 1.5rem;
    border-left: 6px solid var(--cyan-glow);
    border-radius: 8px;
    color: #ccffff;
    box-shadow: var(--glow-cyan);
    animation: pulse 3s infinite;
    margin: 1rem 0;
}
.popup {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.9);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
}
.popup-content {
    background: rgba(10, 10, 10, 0.95);
    padding: 2rem;
    border: 3px solid var(--cyan-glow);
    border-radius: 12px;
    max-width: 600px;
    text-align: center;
    box-shadow: var(--glow-cyan);
}
.neon-popup {
    backdrop-filter: blur(10px);
}
.neon-popup-content {
    background: rgba(10, 10, 10, 0.95);
    padding: 2rem;
    border: 3px solid var(--neon-pink);
    border-radius: 12px;
    max-width: 600px;
    text-align: center;
    box-shadow: var(--glow-pink);
    position: relative;
    color: var(--cyan-glow);
}
.neon-popup-content h2 {
    color: var(--neon-pink);
    text-shadow: var(--glow-pink);
}
.neon-popup-content .heart {
    position: absolute;
    top: 10px;
    left: 10px;
    font-size: 1.5rem;
    animation: pulse 1s infinite;
}
.neon-popup-content button {
    background: var(--neon-pink);
    color: var(--sniper-black);
    padding: 0.5rem 1rem;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    transition: background var(--transition-speed);
}
.neon-popup-content button:hover {
    background: var(--cyan-glow);
}
.popup-content p, .neon-popup-content p {
    margin-bottom: 1rem;
}
.popup-content input[type="checkbox"] {
    transform: scale(1.5);
    margin: 1rem;
}
.popup-content button {
    background: var(--cyan-glow);
    color: var(--sniper-black);
    padding: 0.5rem 1rem;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    transition: background var(--transition-speed);
}
.popup-content button:hover {
    background: var(--purple-dark);
}
.popup-content button:disabled {
    background: #b0b0b0;
    cursor: not-allowed;
}
footer.footer {
    padding: 2rem;
    background: rgba(10, 10, 10, 0.95);
    color: var(--cyan-glow);
    text-shadow: var(--glow-cyan);
    border-top: 4px solid var(--purple-dark);
    text-align: center;
    margin-top: 2rem;
}
footer.footer a {
    color: var(--cyan-glow);
    text-decoration: none;
}
footer.footer a:hover {
    color: var(--purple-dark);
    text-shadow: var(--glow-purple);
}
@media (max-width: 768px) {
    body { padding: 1rem; }
    header.banner h1 { font-size: 1.8rem; }
    main { padding: 1rem; }
    pre { font-size: 0.8rem; }
    .popup-content, .neon-popup-content { max-width: 90%; }
}
@media (max-width: 480px) {
    header.banner h1 { font-size: 1.5rem; }
}